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Capital Stock (Narrative) (Details) (USD $)
Dec. 31, 2014
Class of Stock [Line Items]  
Common stock, shares authorized 12,000,000,000us-gaap_CommonStockSharesAuthorized
Serial Preferred Stock [Member]  
Class of Stock [Line Items]  
Preferred stock, shares authorized 10,000,000us-gaap_PreferredStockSharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= mo_SerialPreferredStockMember
Preferred stock, par value 1.00us-gaap_PreferredStockParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= mo_SerialPreferredStockMember
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= mo_SerialPreferredStockMember
Stock Compensation Plan [Member]  
Class of Stock [Line Items]  
Shares of common stock reserved for stock-based awards 45,070,039us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ us-gaap_AwardTypeAxis
= us-gaap_StockCompensationPlanMember